| Site |
#1
(Kirby Park) |
#2
(Haycock-Longfellow Park) |
#3
(McLean Greens) |
#4
(Winchester Homes Site) |
| Location |
300-600
ft. downstream of Kirby Rd. |
within
15 ft. upstream and downstream of bridge behind Longfellow
MS |
200-500
ft. downstream of Hutchison St. |
100-200
ft. upstream of Hutchison St. |
| #
of samplings |
4 |
4 |
2 |
2 |
| total
area sampled |
30
sq. ft. |
23.5
sq. ft. |
15
sq. ft. |
16
sq. ft. |
| riffle
depth |
1-6
in. |
4-6
in. |
2-3
in. |
3-4
in. |
| total
organisms collected |
35 |
96 |
206 |
156
(quit due to darkness/cold) |
| VA
SOS multimetric score |
6
(high end of unacceptable) (based on small sample) |
5
(high end of unacceptable) (based on small sample) |
2
(low end of unacceptable) |
2
(low end of unacceptable) (based on small sample) |
| stream
bed conditions in monitored riffles |
some
rip-rap/large rocks embedded in bottom; mostly cobbles and
smaller; little sediment/mud |
mostly
cobbles and smaller, some sediment/mud |
mostly
cobbles and smaller, much sediment/mud |
mostly
cobbles, some sediment/mud |
| Condition
of stream bank sides and top |
Sides
mostly riprapped, with some erosion
at water level; 5-10 ft. of trees and shrubs along each
side; then park lawn and wooded slopes for 150 ft. plus
on one side; residential lawn, then houses within 50-75
ft. of stream on other side |
lower
part of sides fairly eroded; upper sides vegetated; top
of bank has trees and shrubs for 50 ft.+ on each side; beyond
that, forested parkland for full 400 ft. to next ridge on
one side; school basketball, tennis courts on other |
lower
part of sides mildly eroded; upper parts mostly vegetated;
top has c. 10 feet of trees, shrubs, then lawn, then houses
c. 75 ft. from stream on one side; steep vegetated but eroded
berm containing construction debris
on other side |
lower
part of sides mildly eroded (less so at monitoring site
than further upstream); upper parts vegetated; top is forested
for full 600 ft. drainage area on either side of stream
|
| Known
stressors |
several
stormwater outfalls (combination
of BMP outfalls and probable unmitigated outfalls) near
+/or under Kirby Rd.; combined effects of upstream stressors
listed for other sites, all located 1800 ft.+ upstream |
inadequate
stormwater mgmt. upstream (one
cul-de-sac with no known mitigation 600 ft. upstream; one
inadequate stormwater pond 1200
ft. upstream); unmanaged runoff from basketball court enters
stream at bridge |
steep
berm/construction debris at site;
concreted/piped stormwater system with no known mitigation draining c. 30
acres empties into stream c. 700 ft. upstream |
concreted/piped
stormwater system with no known
mitigation draining c. 30 acres empties into stream c. 500
ft. upstream |
| Site |
#1
(Kirby Park) |
#2
(Haycock-Longfellow Park) |
#3
(McLean Greens) |
#4
(Winchester Homes Site) |
| total
organisms collected |
35 |
96 |
206 |
156
|
| Worms |
11 |
6 |
50 |
1 |
| Flat
Worms |
0 |
0 |
0 |
2 |
| Leeches |
0 |
0 |
0 |
0 |
| Crayfishes |
1 |
1 |
0 |
0 |
| Sowbugs |
0 |
0 |
0 |
1 |
| Scuds |
1 |
1 |
3 |
66 |
| Stoneflies |
1* |
0 |
0 |
0 |
| Mayflies |
0 |
0 |
0 |
0 |
| Dragonflies
& Damselflies |
2 |
0 |
0 |
0 |
| Helgrammites, Fishflies, and Alderflies |
0 |
0 |
0 |
0 |
| Common
Netspinner caddisflies |
1 |
2 |
40 |
10 |
| Most
Caddisflies |
0 |
0 |
0 |
0 |
| Beetles |
3 |
3 |
0 |
1 |
| Midges |
12 |
76 |
31 |
38 |
| Black
Flies |
0 |
0 |
1 |
0 |
| Most
True Flies |
3 |
6 |
12 |
1 |
| Gilled
Snails |
0 |
0 |
0 |
0 |
| Lunged
Snails |
0 |
0 |
64 |
36 |
| Clams
|
0 |
0 |
5 |
0 |
| |
|
|
|
|
| Salamanders
collected and released |
1 |
1 |
0 |
0 |
| Fish
sighted? |
no,
but have in past at this site |
no,
but have in past at this site |
no |
no,
but have in past at this site |
| |
|
|
|
|
| mayflies
+ stoneflies + most caddisflies |
2.9%* |
0% |
0% |
0% |
| common
netspinners |
2.9% |
2.1% |
19.4% |
6.4% |
| lunged
snails |
0% |
0% |
31.1% |
23% |
| beetles |
8.6% |
3.1% |
0% |
.64% |
| %
tolerant |
74% |
87% |
74.8% |
92.3% |
| %
non-insects |
37% |
9.4% |
59.2% |
68% |
| |
|
|
|
|
| VA
SOS score |
6
|
5
|
2
|
2
|
